package sunwin.yois.web.common;

import jodd.jerry.Jerry;
import jodd.util.StringUtil;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created by mt on 2015-9-7.
 */
public class YoisImageHelper {

    private static final String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; // 定义script的正则表达式
    private static final String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; // 定义style的正则表达式
    private static final String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式
    private static final String regEx_space = "\\s*|\t|\r|\n";//定义空格回车换行符

    /**
     * 更改图片路径
     *
     * @param content
     * @return
     */
    public static String changeImgSrc(String content, String imgType) {
        Jerry.JerryParser jerryParser = new Jerry.JerryParser();
        Jerry doc = jerryParser.parse(content);

        doc.$("img").each((Jerry $this, int index) -> {
            try {
                String src = $this.attr("src");
                if (StringUtil.isNotBlank(src)) {
                    $this.attr("src", R.YomUrl + src);
                }
                if (StringUtil.isNotBlank(imgType)) {
                    $this.attr("type", imgType);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return true;
        });

        return doc.html();
    }

    /**
     * 删除HTML标签
     *
     * @param htmlStr
     * @return
     */
    public static String delHtmlTag(String htmlStr) {
        Pattern p_script = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE);
        Matcher m_script = p_script.matcher(htmlStr);
        htmlStr = m_script.replaceAll(""); // 过滤script标签

        Pattern p_style = Pattern.compile(regEx_style, Pattern.CASE_INSENSITIVE);
        Matcher m_style = p_style.matcher(htmlStr);
        htmlStr = m_style.replaceAll(""); // 过滤style标签

        Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
        Matcher m_html = p_html.matcher(htmlStr);
        htmlStr = m_html.replaceAll(""); // 过滤html标签

        Pattern p_space = Pattern.compile(regEx_space, Pattern.CASE_INSENSITIVE);
        Matcher m_space = p_space.matcher(htmlStr);
        htmlStr = m_space.replaceAll(""); // 过滤空格回车标签

        return htmlStr.trim(); // 返回文本字符串
    }
}
